For frozen biomaterials, medicines and laboratory samples, the Gram BioPlus RF500 is a slim full-height freezer: 600 mm wide and 2025 mm tall. Gross volume is 500 litres, net volume 365 litres, and the range runs from −25 to −5 °C. The interior is stainless steel behind a solid door.
Cooling is fan-assisted with automatic defrost, and the defrost water is evaporated. The electronic Gram controller comes with a voltage-free contact, E-sensor, offset and a digital thermometer. Audible and visual alarms are given for high or low temperature and an open door.
Daily energy consumption is 3.83 kWh and electrical power 336 W, at 48.7 dBA with R290 refrigerant. Ambient range +10…+43 °C. Measuring 600 × 805 × 2025 mm, the cabinet weighs 130 kg net and has a white lacquered or stainless-steel exterior.